I don't have the money for the spearco unit from fwdperformance...But I said this and it basically matches their specs pretty close...
this isn't the EXACT one, but last night the companies auction ended for their "20x12x3.5" version for 199 bid, or 250 buy it now...so I hope they add more in the next day or two, but this is kind of close too.
http://cgi.ebay.com/ebaymotors/TURBO...QQcmdZViewItem